Car-roof.



W. D. THOMPSON & S. OTIS.

CAR ROOF.

APPLICATION FILED DEC.30. I910.

Patnted Oct. 19, 1915.

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CAR ROOF. APPLICATION FILED DEC-30.1910.

Patented Oct. 19, 1915.

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WILLIAM n. THOMPSON.

OF DETROIT, MICHIGAN, AND SPENCER OTIS, OF CHICAGO,

ILLINOIS, ASSIGNORS TO HUTCHINS CAR ROOFING COIIPANY, 013 DETROIT, MICHI- GAN, A CORPORATION OF MICHIGAN.

CAR-ROOF.

Specification of Letters Patent.

Patented. Oct. 19, 1915.

Application filed December 30, 1910. Serial No. 600,180.

To all whom it may concern.

Be it known that we, IVILLIAM D. THOMP- SON and SPENCER Oris, citizens of the United States of America, residing at Detroit and Chicago, in the counties of \Vayne and Cook and States of Michigan and Illinois, respectively, have invented certain new and use- Car-Roofs, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to car roofs of the type in which the roof spans are formed by metallic plates flexibly secured in position to compensate for distortions in the roof frame.

It is the object of the invention to simplify' the construction by dispensing with parts that have heretofore been deemed necessary with structures of this type. Thus, it is usual to form a weather proof joint between the sheets by providing metallic caps embracing upstanding side flanges of the sheets, said caps forming no structural element of the roof frame. With the present invention these caps are dispensed with and the weather-proofing is effected by the peculiar construction and arrangement of the carlines as hereinafter set forth.

In the drawings,-Figure 1 is a longitudinal. section through a portion of the car roof; Fig. 2 is'a cross section thereof; Fig, side plates of the car structure by down 3 is an enlarged section showing a portion of Fig. 2. Fig. 4 is a View similar to Fig. 1 showing a modified construction.

A are carlines which extend between the side plates B of the car frame and .are secured thereto.

C are purlins arranged beneath the carlines A. and suspended therefrom at the points of crossing by bolts D, and E' are the metallic roofing sheets supported on the purlins and spanning the spaces between the same and the carlines,

To form a weather proof joint and at the same time to dispense with the usual carline cap, the carlines A are formed of an inverted channel section and embrace upstanding flanges at the edges of the sheet. It is however, necessary to provide freedom of movement for the sheets to impart the desired flexibility to the roof, and consequently a clearance is formed between the carlines and the sheets. This is provided by the attachment of the purlins C .to the carlines through the medium of spacers F which fit into thechannel and are secured in position by the bolts D. The purlins C are preferably notched or gained at G to engage the spacers and to, transmit longitudinal stresses from the purlins to the carlines.

With the construction as thus far described the roof sheets E rest upon the'purlins clear of the lower edges of the carlines and have their upstanding flanges embraced by the'down-turned flanges of' the carlines. To increase the efiectiveness of the Weather guard, a brake joint is formed, and as specifically shown, the sheets E are provided with vertical flange portions H having laterally extending portions I and terminating in vertically extending portions J. The sections of the carline and spaced blocks F are of similar form and thus a double brake or change in direction of the clearance space between the carlines and sheets is formed which will eflectively guard against forcing of water from the roof into the car.

The roofing sheets E preferably extend from eave to eave without break or interruption at the ridge which avoids the necessity of ridge caps. At the eaves the sheets may be provided with down-turned flanges as shown in dottedlines of Fig. 3.

The carlines are preferably secured to the turned flanges K and transverse bolts L, and clearance forthe down-turned eave flanges ofthe sheets is provided by arranging spacers M betweeif the plates or fascia, and the flanges K.

In Fig. 4 a modified construction is shown in which the carline A is of an inverted channel section having laterally extending flanges A at its lower edge. The roof sheets have upstanding flanges E which are embraced by the carlines, but in place of the brake-joint construction shown in Fig. 1 the flanges E are formed with return bends F which prevent the water from splashing over said flanges.

What we claim as our invention is:

1. In a metal car roof,the combination with load-supporting carlines, of metal loadsupporting sheets having their edges arranged to form a weather proofing flexible from'the carlines at a 'tions of the carlines downward and between the carlines, roof sheet supports and means extending from the upper porto and suspending said supports.

.4. In a metal car roof, the combination with load-supporting carlines of inverted U-section, of a plurality of load-supporting roof sheets arranged below the carlines, with the respective adjacent edges of said sheets lying u der and capped by the carlines, and

means within and below the carlines suspended therefrom for holding the roof sheet edges in position under said carlines.

5. In a flexible metal car roof, the com} bination of side plates, load-sustaining roof-' ing sheets extending across and overlapping said side plates andhaving flanged edges, carlines secured to said side plates intermediate said sheets and extending over and weather-proofing the flanged edges of the latter permitting freedom for relative movement of the sheets, and means suspended from said carlines for normally supporting said sheets intermediate said side plates.

6. In a flexible metal car roof, the combination of side plates, arched load-sustaining roofing sheets extending across and overlapping said side plates and having flanged edges, arched carlines secured to said side plates intermediate said sheets and extending over and weather-proofing the flangesedges of the latter permitting freedom for relative movement of the sheets,

- andmeans suspended from said carlines for normally supporting said sheets intermediate said side plates.

7. In a flexible car roof, the combination With side plates of arched load-sustaining roofing sheets having downturned eave flanges overlapping said side plates, and also having flanged side edges, arched carlines secured to said side plates intermediate said sheets, extending over and capping said flanged side edges and ,having downturned ends overlapping the 4 downturned eave flanges of said sheets, and means suspended from said carlines for supporting said sheets intermediate said plates, permitting free dom for independent movement thereof.

In testimony whereof I affix my signature in presence of two Witnesses.

- WILLIAM D. THOMPSON.

Witnesses:

JAMES: P. BARRY, WALTER W. TULLEYL In testimony whereof I aflix my signature in presence'of two witnesses.

. v SPENCER OTIS. Witnesses:

EDWIN FRANCE,- W. L. ,Dn RENIER.

Copies of this patent may be obtained for five cents each, by addressing the fcommissioner of Patents,

Washington, D. 0. 

